Sag Events; Surge Events - ACR Electronics PowerWatch Reference Manual

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See also:
Events
Frequency events

Sag events

Surge events

Outage events
Loss of Synchronization events
Ó 2007, ACR Systems Inc.
5.2.1.4 Sag events
Sag Events
Sags are decreases in line voltage lasting for at least one cycle. Sags are only
measured on the hot-neutral lines. Typically, a sag will range from a few volts
to tens of volts below normal.
If the voltage drops below the sag threshold, a sag event will be recorded. If it
drops below 70V, the event will be recorded by PowerWatch as an outage.
See also:
Events
Frequency events
Impulse events
Surge events
Outage events
Loss of Synchronization events
ACR Systems Inc.
Ó 2007,
5.2.1.5 Surge events
Surge Events
Surges are increases in line voltage that last at least one full cycle. Surges
can occur on both the hot-neutral line or neutral-ground line.
Typically, surges are in the order of tens of volts and last from several cycles
to several seconds.
If the voltage exceeds the surge voltage threshold for longer than one cycle, a
surge event will be recorded.
See also:
2007 ACR Systems Inc.